add silent to :doautocmd

fix #294

Author: haya14busa

autoload/vital/_easymotion/HitAHint/Motion.vim

@@ -135,15 +135,15 @@ function! s:move_to_winpos(winpos) abort
   let is_win_moved = !(winnr is# winnr())
   if is_win_moved
     if exists('#WinLeave')
-      doautocmd WinLeave
+      silent doautocmd WinLeave
     endif
     call s:move_to_win(winnr)
   else
     normal! m`
   endif
   call cursor(pos)
   if is_win_moved && exists('#WinEnter')
-    doautocmd WinEnter
+    silent doautocmd WinEnter
   endif
 endfunction